Doistat waldkibcher



(No Model.)

D. WALDKIRCHER. PUMP.

No. 380,466. Patented Apr. 3, 1888.

UNTTED STATES Ai-TTnNT @Tirion DONA'I WTALDKIRCHER, OF SANDUSKY, OHIO.

PUMP.

SPECIFICATION forming part of Letters Patent No. 380,466, dated April 3, 1888.

Application tiled October 6, 1887. Serial No. 251.604. (No model.)

To @ZZ whom it may concern.'

Be it known that I, Donar WALDKIRCHER, a citizen of the United States, residing at Sandusky, in the county of Erie and State of Ohio, have invented certain new and useful Improvements in Pumps, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an improvement in oscillating pumps; and the invention eonsists in animproved construction and arrange-V ment of the parts, all as hereinafter set forth and specifically claimed.

In the drawings which accompany this specifictitiou, Figure l is a verticahcentral crossseetion of my improved pump. Fig. 2 is a vertical central axial section thereof. Fig. 3 is a detached perspective of the pumpcylinder. Fig. 4 is a det-ached perspective view of theoscillating pistons. Fig. 5 is a detached perspective of the valve-case. Fig. 6 is a detached perspective of one of the valves.

A. is the pump-cylinder, which is of a cylindrical shape, flattened on top and bottom, as shown, and provided with lateral anges a, by means of which itis supported upon a suitable frame.

B are the heads which close the ends of the pump-cylinder, and each ofthese heads is provided with a Starling-box, b.

C is the oscillating piston-rod, journaled in the axis of the pump-cylinder and passing through the stuffing-boxes b, and to this piston-rod are secured, or preferably integrally formed therewith, the oscillating pistons G G, which are diametrically opposite each other and are provided with ports H H, passing di agonally in opposite directions to each other through said pistons.

I I are two segmental-shaped abntments formed within the pump-cylinder on the flattened portion thereof, preferably by casting them integrally therewith, and the inner ends of these abutments form segmental bearings c for the piston-rod, and are provided with suitable packing, d. These segmental abutments divide the pumpcylinder into two segmental pumping-chambers, .I J, within which the pistons are free to oscillate.

L L are the induction and L L the eduction ports of the pump-cylinder, and these ports communicate with the pumpingcham bers through the induction-passages K Kfand eductionpassages K K', formed, respectively, in the segmental abutments I I. One of the two induction-passages K K connects with one of the two pump-chambers J J and the other with the other pump-chamber, and the two eduction-passages K K are arranged in the same manner, the object being to make the pump thereby double-acting.

M M are two interchangeable valve-chests, formed, preferably, in one piece and provided with the ports N N, which correspond with the ports L L in the pump-cylinder.

The ports N N in the valve-chests and the corresponding ports,LL,in thepumpcylinder form seats for the interchangeable valve-casings O in which the puppet-valve P operates. The valve-casings O have annular shoulders e, and by means of these shoulders the valve-casings are seated on the adjacent faces of the valve-chests and pump-cylinder, suitable recesses, f, being formed therein to receive a packing to form water-tight joints and prevent the packing from spreading. The valve-chests are secured to the pumpoylinder by means of bolts R, projecting through the hollow stud S in the valve-case, anda nut, U, upon the threaded end of thebolts permitstheseeurin gof thechests firmly to the cylinder, butin a manner readily to be detachable therefrom. To the upper valve-chest is then suitably attached a ols-A charge-pipe, V, which communicates with an air-chamber, \V, and to the lower valve-chest the suction-pipe Z is suitably connected. In practieethepiston-rodisprovidedwithhandles D for oscillating it by hand,or with any other suitable device for oscillating it by mechanical power,and the pump being properly connected with the water-supply the upward oscillations of each piston will lift the water into the space below the piston and force the water out from the space above the piston, whilethe downward oscillation of each piston will lift the water into the space above the piston and force the water below said piston into the space above the other piston, and from there through one of the passages K and eduction-ports L and valve-chamber M to the discharge-opening. Thus the water is inducted and educted by the alternate upward and downward oseillation of the piston, and as the two pistons oscillate simultaneously in opposite directions ICC the pump is what is called doubleacting. l 'Ihe pistons are provided with suitable packing, h, to move water-tight, and watertight joints are formed between the different parts 5 wherever required. By giving the handles proper shape and leverage a very powerful jet can be obtained, and if secured upon a suitable truck it may serve admirably well as a pump for extinguishing fires.

I want to call special attention to the following points in the construction of my pump First. The valves, instead of being secured in the pistons,as in the ordinary construction of oscillating pumps, are secured on the out- I5 side of the pumpcylinder, and in a manner which permits of very easy access, there being but one nut to unscrew to remove either one of the valve-chests together with the respective valve and valve-casing.

Second, The valve chests and valves are made interchangeable and the pump-cylinder is reversible.

Third. The construction of the segments I with the induction and eduction passages K 25 K permits of casting them integral with the pump-cylinder, there being no difficulty in truing the cylindrical portions of the pumpcylinder by means of an oscillating boring-tool after the bearings c upon the inner ends of the 3o segments I I are rst properly trued and then used as guides for a suitable oscillating boringtool for the inside of the cylindrical portion of the pump-cylinder. The passages K K are preferably formed as wide as the shape of the 35 segments I will admit to leave the necessary strength to form abutments for the pistons,

and as the passages K K and K K in each segment communicate with the opposite pump ing-chambers there is a partition, K, formed 4o between each two contiguous passages.

Fourth. By means o.r the valve-cases and the shoulders e formed thereon, and by means of suitable packing-rings secured in the recesses f on the pump cylinder and on the valvechests, superior water-tight joints are formed between these parts by tightening up the nuts U, there being enough clearance provided between the -valve-chests-and the pump-cylinder to bring all the pressure onto the packing.

Fifth. The relative arrangement of the passages K K to each other and to the ports Hin the pistons permits the water to follow a direct upward course through the pump, thereby reducing greatly the internal friction.

Sixth. While the segmental abutments I I need not necessarily be formed integral with the pump-cylinder, Ihave purposely arrangedA the parts to be enabled to do so,k as it reduces the number of possible sources for internal leakage, and also gives increased facility for forming the bearings c and keeping them true.

What I claim as my invention is In a double-acting oscillating pump, the combination of the reversible pump-cylinder A, the piston-rod C, the oscillating pistons G G, formed integral with said rod, the induction and eduction ports L L in said cylinder, the valve-seats O in said ports, valves Rindependent of the cylinder, valve-chests M, partition K between the passages K K', bolts R,v screwed into said partitions, and the nuts U, all arranged substantially as described.

In testimony whereof I affix my signatu re,in presence of two witnesses,this 30th day of July, 1887.

DONAT VALDKIRCHER.

Wltn esses:

A. BARTHEL, J. ERCKENER. 

